| Autor: |
Naoto Naito, Tatsuya Matsuda, Kinya Miura, Takumu Omura |
| Předmět: |
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| Zdroj: |
International Journal of GEOMATE; Jun2023, Vol. 24 Issue 106, p77-84, 8p |
| Abstrakt: |
The prediction accuracy of the arrival distance of granular avalanches caused by rock slope failures requires considerable improvement. However, the dependence of flow behaviour on the properties of the slope and the granular material has not been clarified thus far. Many researchers have conducted analytical investigations using discrete element simulations. However, in these cases, the numerical models were confirmed by comparing only the final deposition shapes between experiments and simulations. When analysing the flow behaviour of granular materials, their velocity distribution during slope flow must be reproduced. This paper proposes a discrete element modelling method to achieve a more reliable discrete element method simulation of the flow behaviour of failed debris on a slope. The method was developed based on the results of particle shape measurements, restitution tests, and sliding tests. Consequently, the proposed discrete element modelling can reproduce the final deposition and velocity distribution of granular materials during slope flow with practical accuracy. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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